My recently purchased conversion has a tuned input where the band selector
was. 3kv plates, 50w input gets me ~1kw out.
73, Roger
W7TZ
CN83ia
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On Fri, Jun 5, 2020 at 8:47 PM Artek Manuals <Manuals@artekmanuals.com>
wrote:
> Agree in principle..QSK on 6M not that important
>
> Dave
> NR1DX
>
> On 6/5/2020 11:30 PM, Jim wrote:
> > Good article except for tearing out the original relay. Not necessary,
> > unless you want to use QSK or hate the sound of loud relays (like I do).
> >
> >
> > Thanks
> > 73
> > Jim W7RY
> >
> > On 6/5/2020 10:24 PM, Adrian wrote:
> >> Have you seen this one Steve ?� ;
> >>
> >> http://www.arrl.org/files/file/Technology/QST_Apr_2008_p38-40.pdf
> >>
> >>
> >> On 6/6/20 1:10 pm, Artek Manuals wrote:
> >>> I have enough HF amps here (four at last count) One of them is an
> >>> ancient SB-220 , so I thought what the heck I would "hack" it and
> >>> turn it into a 6M single band. I have a folder� full of articles on
> >>> how to from the last 20 + years.
> >>>
> >>> All done "physically" but try as I may I can not get more than about
> >>> 600w out .
> >>>
> >>> 1) Two different tank circuits , one with a section of the original
> >>> 10/15� coil from the SB220 and a 2nd one with a a piece of flat
> >>> copper strap ...no difference
> >>> 2) Changed the parasitic chokes
> >>> 3) Tried� "T" input match. Pi input match , straight through ...no
> >>> difference
> >>> 4) Plate voltage is 2400 unloaded and about 2050 loaded in CW position
> >>> 5) Bias measures 6V
> >>> 7) Has new Hardbach bias and diode and metering board
> >>> 8) Older set of Eimac 3-500Z and newer set RF Parts 3-300ZG ...no
> >>> difference
> >>>
> >>>
> >>> What am I missing, ?
> >>> What else to try?
> >>>
> >>> Dave
> >>> NR1DX
> >>> manuals@artekmanuals.com
> >>>
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> >
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>
> --
> Dave
> Manuals@ArtekManuals.com
> www.ArtekManuals.com
>
>
> --
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